The Kramer KFO400L4SDB + 2× KL6E105DDASC ×2 is a factory-matched Walk-In Freezer Complete Refrigeration System engineered for compact commercial refrigeration. Built on Kramer's Next-Gen K-Series scroll platform with multi-refrigerant compatibility (R-448A / R-449A / R-407A / R-404A), this pre-paired system delivers a turn-key solution for restaurants, convenience stores, grocery, floral shops, and cold-storage facilities.

Designed to handle walk-in freezer boxes up to 20'×28' at standard operating conditions, this system takes the guesswork out of sizing — every component (condensing unit and evaporator) is Kramer-engineered to work together at peak efficiency from day one.

Compatible Walk-In Freezer Room Sizes

This pre-matched system is engineered to handle the following walk-in freezer box sizes (8' interior box height, 95°F ambient temperature, -10°F holding temperature, indoor heavy-duty commercial use):

• 20'×28' — approx. 27,915 BTU/h cooling load

Cooling load range: 27,915–27,915 BTU/h. If your walk-in falls between listed sizes or has different conditions, contact us for a custom-matched system.

What's Included

• 2 × Kramer KFO400L4SDB — 4 HP low-temperature air-cooled scroll Condensing Units (outdoor installation)
• 2 × Kramer KL6E105DDASC — low-profile draw-through Evaporators / Unit Coolers (indoor ceiling-mount)
• Full documentation package — specification sheets, installation guides, and warranty documents for both condensing unit and evaporator (accessible in the Documents tab)

System Specifications

• Application: Walk-In Freezer (indoor commercial use)
• Design conditions: -10°F holding temperature, 95°F ambient
• Refrigerant compatibility: R-448A / R-449A / R-407A / R-404A — multi-refrigerant flexibility for EPA-compliant retrofits or new installations
• Electrical: 208-230V, 1 Phase, 60Hz
• Maximum box height: 8' interior
• Duty rating: Heavy-duty commercial
• Compressor type: Scroll (Next-Gen K-Series)
• Fan technology: Energy-efficient EC (electronically commutated) motors

Standard Features

Condensing Unit (KFO400L4SDB) includes:

• Solid-state defrost timer — factory pre-set and wired
• Energy-efficient EC condenser fan motors — quieter operation and lower energy costs
• Sealed liquid line filter drier and moisture-indicating sight glass
• Standard liquid receiver for stable refrigerant charge management
• Fixed high-pressure and adjustable low-pressure controls for safe, reliable operation
• Standard defrost kit — factory-integrated for reliable freezer operation
• Weather-resistant powder-coated cabinet — built for outdoor durability
• Multi-refrigerant compatibility (R-448A, R-449A, R-407A, R-404A) — future-proof and EPA-compliant

Evaporator (KL6E105DDASC) includes:

• TXV (thermostatic expansion valve) — factory-mounted and piped, ready to run
• Liquid-line solenoid valve — factory-mounted for pump-down control
• Electronic thermostat — factory-mounted, pre-wired for R-448A / R-449A / R-407A / R-404A
• Draw-through air design with deep-draw venturi for optimal airflow distribution
• Balanced 12-inch aluminum fans with dual-speed EC motors — vibration-free operation
• Embossed aluminum housing — lightweight, corrosion-resistant, and durable
• Baffled fan sections reduce discharge-air short cycling
• Slotted mounting points and slide-out end panels for fast install and easy service access
• Removable drain fitting for easy field replacement
• Standard sweat connections on all models
• Factory-wired components for faster commissioning
• NSF compliant — food-service certified
• UL and cUL listed, California Title 24 compliant

Why Choose Kramer Complete Refrigeration Systems?

• Factory-matched sizing — no guesswork. Every component is engineered to work together at peak efficiency for your specific room size.
• Multi-refrigerant future-proof — compatible with R-448A and R-449A (primary, EPA-compliant), plus R-407A and R-404A for legacy retrofits.
• Complete package savings — pre-matched system pricing beats buying components separately.
• Faster installation — factory-wired components and pre-mounted controls reduce install time.
• Lower long-term costs — EC motors, high-efficiency coils, and scroll compressors deliver energy savings year after year.
• NSF / UL / Title 24 certified — meets or exceeds all commercial food-service compliance requirements.

Typical Applications

• Restaurant walk-in freezers (produce, dairy, meat, dessert storage)
• Convenience store beverage and grab-and-go coolers
• Grocery store back-of-house cold storage
• Floral shop cut-flower coolers
• Bakery ingredient and product storage
• Cold-storage warehousing and distribution

Documentation & Support

Complete manufacturer documentation is attached to this product listing, including:

• Kramer Kompact Condensing Unit Specification Sheet
• Kramer Low-Profile Unit Cooler Specification Sheet
• Kramer Refrigeration Systems Installation Guide
• Kramer Low-Profile Unit Cooler Installation Guide
• Kramer Warranty Documentation

Our HVAC/R specialists are available to answer sizing, installation, and refrigerant questions. For custom system quotes or bulk orders, contact The AC Outlet team directly.